Never install or replace PSU during a lightning storm.
Never install or replace PSU in wet locations.
Never install or replace PSU unless at least 20 s has elapsed after the AC supply and
backup battery supply are disconnected.
To protect the back board from static electricity, do not touch parts on the back board
in the main unit and PSU. To discharge static electricity, touch ground or wear an
The following procedures are for installing or replacing a PSU only. Do not replace or
remove the PSU for any other purpose.
Installing the Power Supply Unit
Insert the PSU along the guide rails.
For safety reasons, do not touch parts in the PSU.
2.2 Installation of the Hybrid IP-PBX — KX-TDA100/KX-TDA200